CN206208469U - Metal composite blank vacuum leak detecting system - Google Patents
Metal composite blank vacuum leak detecting system Download PDFInfo
- Publication number
- CN206208469U CN206208469U CN201621243614.3U CN201621243614U CN206208469U CN 206208469 U CN206208469 U CN 206208469U CN 201621243614 U CN201621243614 U CN 201621243614U CN 206208469 U CN206208469 U CN 206208469U
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- blank
- vacuum
- vavuum pump
- leak
- metal composite
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Abstract
The utility model provides a kind of metal composite blank vacuum leak detecting system, for the vacuum leak hunting before the blank rolling of titanium, nickel, stainless steel, steel, including the blank with escaping pipe, the helium gas source with gas spray gun, vavuum pump, mass spectrograph and the vacuum meter that the vavuum pump is connected, the first valve and the connection vavuum pump and mass spectrometric second valve that connect the blank and the vavuum pump, the gas spray gun is connected with the escaping pipe.The beneficial effects of the utility model are：Leak detection sensitivities are high, can detect very small leak source, leak efficiency high, and simple and easy to operate, instrument is quick on the draw, high precision, and is difficult to be disturbed by other gases, suitably put into practical application, work well.
Description
【Technical field】
The utility model is related to metal composite plate blank material leak detection field, and in particular to a kind of metal composite blank vacuum leak hunting
System.
【Background technology】
How vacuum rolling field ensures that the high vacuum seal of blank is a key technology.At present, sealing is measured
Leak hunting method can be roughly divided into pressurization and vacuum method.Pressurization is the leak detection side inside gases at high pressure feeder
Method；Vacuum method is that device is evacuated, and probe gas is blown or is coated on by test object, by flowing into vacuum plant
Interior probe gas finds out leak source.
With reference to the leak hunting method of heat exchanger, conventional has：1st, range estimation leak detection, simple and easy to do, does not have cost, but have very big
Defect, only big leak source, the place of usual seepage is very trickle, is visually hardly visible.2nd, suds leak detection, after drilling first
The argon gas of certain pressure is passed through, then soap is thinly sliced, leaching is stirred continuously dissolves it in the hot water, and suds are after cooling
Stiff shape, lurid solution are condensed into, blank commissure is applied to, the place for having leak source has bubble to emerge, the method letter
Easy row, has been applied in actual production, is domestic generally by the way of.
Therefore, it is necessary to provide a kind of new metal composite blank vacuum leak detecting system.
【Utility model content】
The purpose of this utility model be provide it is a kind of imitate accurately, lossless practical metal composite blank vacuum leak hunting system
System, the purpose of the method is to ensure blank inside high vacuum air-tightness, it is ensured that the composite plate for rolling out possesses combination higher
Intensity.
The technical solution of the utility model is as follows：A kind of metal composite blank vacuum leak detecting system, for titanium, nickel, stainless
Steel, steel blank rolling before vacuum leak hunting, including the blank with escaping pipe, the helium gas source with gas spray gun, vavuum pump,
Mass spectrograph and the vacuum meter that the vavuum pump is connected, the first valve for connecting the blank and the vavuum pump and connection are described
Vavuum pump and mass spectrometric second valve, the gas spray gun are connected with the escaping pipe.
Preferably, the vavuum pump passes sequentially through reducer union, bellows, packing ring and clips and connects with the mass spectrograph
Connect.
Preferably, the mass spectrograph is PHOENI XL300 helium mass analyzers.
The beneficial effects of the utility model are：
1st, leak detection sensitivities are high, can detect very small leak source, leak efficiency high, and simple and easy to operate, instrument is quick on the draw,
High precision, and be difficult to be disturbed by other gases, suitably put into practical application, work well.
2nd, the reaction time is short, can improve operating efficiency.
3rd, can position, quantify, the position of leak source can not only be found out, moreover it is possible to determine the size of leak rate.
4th, energy indestructive leakage-check, does not make blank be damaged and pollute.
5th, probe gas is nontoxic, not etching part.
【Brief description of the drawings】
Fig. 1 is the structure chart of the utility model metal composite blank vacuum leak detecting system.
【Specific embodiment】
With reference to implementation method, the utility model is described in further detail.
The vacuum inspection that the metal composite blank vacuum leak detecting system is used for before the blank rolling of titanium, nickel, stainless steel, steel
Leakage, including the blank 1 with escaping pipe, the helium gas source 2 with gas spray gun, vavuum pump 3, mass spectrograph 4 and the vavuum pump 3
First valve 5 of the vacuum meter 7 of connection, the escaping pipe for connecting the blank 1 and the vavuum pump 3 and connect the vavuum pump 3
With the second valve 6 of the mass spectrograph 4.
The mass spectrograph 4 is PHOENI XL300 helium mass analyzers.
The method of work of the metal composite blank vacuum leak detecting system, comprises the following steps：
The vavuum pump 3 passes sequentially through reducer union, bellows, packing ring and clips and is connected with the mass spectrograph 4.
Step one, the vavuum pump 3 and the outlet mouth of pipe are connected, taken out in advance to carrying out vacuum inside the blank 1, and
Observe the reading of vacuum meter 7 of the vavuum pump 3；
Step 2, the vavuum pump 3 is connected with the mass spectrograph 4；Specifically, the vavuum pump 3 and the mass spectrograph 4
Pass sequentially through the connection of reducer union, bellows, packing ring and clips；
Step 3, as vacuum≤0.1Pa, the mass spectrograph 4 is opened, using spray gun by the helium of purity 99.999%
Spray in welded joints paragraph by paragraph, and observe the change of the reading of vacuum meter 7；Before the mass spectrograph 4 is started, the vavuum pump 3 must be fastened
Air valve, it is ensured that the vacuum in mass spectrum chamber, after pending data is steady, opens valve, detection data；
Step 4, drastically change or show when the vacuum values of the mass spectrograph 4 >=10-9 grades when, show at the detection
There is leak source and marked；
Step 5, using the gas spray gun to leak source repair welding after, it is qualified to the blank 1 to hunt leak again.
Specifically, when carrying out vacuum and taking out in advance, first valve 5 keeps clear, and observes vacuum meter reading.
The vavuum pump 3 fastens the second valve 6 when being connected with mass spectrograph 4, as vacuum≤0.1Pa, carry out weld joint close
The detection of envelope property.
Mass spectrograph 4 is opened, the second valve 6 is opened after vacuum values are steady, now mass spectrograph 4 is connected with vavuum pump 3,
Pumping operation is carried out to blank 1 simultaneously, probe gas is sprayed in welded joints paragraph by paragraph, examine the change of leak detector vacuum degrees of data
Change.
Helium first is sprayed with spray gun to the place (such as seal nipple, bellows, packing ring) that there may be leak source, it is ensured that connecting portion
Position air-tightness is good, it is to avoid complex component inside gas leakage, then blank weld seam is hunted leak.If there is leak source in blank somewhere, when helium spray
When on to leak source, helium can be inhaled into vacuum system immediately, and so as to be diffused into mass spectrum chamber, the data of helium mass spectrometer leak detector are just
Can change immediately.Be should be noted that when using：Helium is lighter inert gas, can be risen automatically after ejection, in order to accurate
Spray helium in leak source position, should from top to bottom, by closely to remote (with respect to leak detector position), because when below surfacing being stitched during spray helium
Helium is possible to be sucked by top leak source, is difficult to determine the position of leak source, furthermore, leak source leak detector with a distance from mass spectrum chamber is anti-
It is also different between seasonable, so spray helium should be first since near the side of leak detector by closely to far carrying out.To the place for having leak source, will
It is marked.The leak source vacuum available sealing clay that has found temporarily is closed and the method such as carrys out, and leak source is detected one by one.Surrounding weld seam has been hunted leak
Cheng Hou, using argon arc welding and mild steel weldinmg rod by leak source repair welding, it is qualified that leak source is hunted leak again.
After the completion of detection, vavuum pump air valve is fastened, intercept the rough vacuum that air ensures mass spectrum chamber, press stop keys, close gas
Atmospheric valve is closed in town, emptying, closes detector.
In sum, the high vacuum air-tightness of blank is vacuum rolling field important technical problem to be solved.This
Utility model uses vacuum method, using helium as probe gas, detection leakage is changed by the vacuum value of magnetic deflection mass spectrometer
Point range, the instrumental sensitivity reaches 10-9Pa.L/s, repairing leak source that can be accurate and effective.
Above-described is only implementation method of the present utility model, it should be noted here that for the ordinary skill of this area
For personnel, on the premise of the utility model creation design is not departed from, improvement can also be made, but these belong to this practicality
New protection domain.
Claims (3)
1. a kind of metal composite blank vacuum leak detecting system, for the vacuum leak hunting before the blank rolling of titanium, nickel, stainless steel, steel,
It is characterised in that it includes the blank with escaping pipe, the helium gas source with gas spray gun, vavuum pump, mass spectrograph and the vacuum
The vacuum meter of pump connection, the first valve for connecting the blank and the vavuum pump and connect the vavuum pump and the mass spectrograph
The second valve, the gas spray gun connects with the escaping pipe.
2. metal composite blank vacuum leak detecting system according to claim 1, it is characterised in that：The vavuum pump with it is described
Mass spectrograph passes sequentially through the connection of reducer union, bellows, packing ring and clips.
3. metal composite blank vacuum leak detecting system according to claim 1, it is characterised in that：The mass spectrograph is
PHOENIXL300 helium mass analyzers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621243614.3U CN206208469U (en) | 2016-11-16 | 2016-11-16 | Metal composite blank vacuum leak detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621243614.3U CN206208469U (en) | 2016-11-16 | 2016-11-16 | Metal composite blank vacuum leak detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206208469U true CN206208469U (en) | 2017-05-31 |
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ID=58749472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621243614.3U Active CN206208469U (en) | 2016-11-16 | 2016-11-16 | Metal composite blank vacuum leak detecting system |
Country Status (1)
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| CN (1) | CN206208469U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323816A (en) * | 2017-07-31 | 2019-02-12 | 深圳市远望工业自动化设备有限公司 | Mass spectrum leak detection equipment |
-
2016
- 2016-11-16 CN CN201621243614.3U patent/CN206208469U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323816A (en) * | 2017-07-31 | 2019-02-12 | 深圳市远望工业自动化设备有限公司 | Mass spectrum leak detection equipment |
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